Sand and gravel washing and separating machine.



F. KRENZER.

SAND AND GRAVEL WASHING AND SEPARATING MACHINE.

APPLICATIQN FILED MAR. I7, 19.17.

Patented Jan. 22, 1918.

2 SHEETS--SHEET F KRENZER. SAND AND GRAVEL WASHING AND SEPARATING MACHINE.

n APPLICATION FILED MAR. 17, I917- l k lm Patented Jan.22,1918.

2 SHEETS-SHEET 2.

1 insane.

FERDINAND KRENZER, F HIGHLAND, ILLINOIS.

SAND AND GRAVEL WASHING AND SEPARATING MACHINE.

Specification of Letters Patent.

Patented Jan. 22, WW...

Application medlama 17, 1917. Serial No. 155,525.

to provide a machine which will efliciently separate sand from gravel through the medium of screening means. wash the separated matter and then discharge the same therefrom by way of independent chutes.

It is another object of the invention to provide means forreceiving the separated sand and gravel and maintaining the same. 7 apart, whereby, it can be properly discharged from the machine.

A further object of the invention is to rovide screenin means. the same bein p 1 h b.

subjected to a washing operation and communicating with the sand and gravel receiving means.

The invention consists, furthermore, in the novel arrangements and parts of the machine. as well as in the details of the con struction of the samegall of which will be more fully described in the following specification. and then finally embodied in the clauses of the claim which are appended to the specification and which form an essential pa t of the same.

The invention is clearly illustrated in the accompanying drawings. in which:

Figure 1 is a side elevation of my im proved separating machine: 7

Fig. 2 is a top plan thereof;

Fig. 3 is a vertical longitudinal section therethrough; and

Fig. 4- is an end elevation thereof.

Similar characters of reference are employed in all of the above described views, to indicate corresponding parts.

Referring now more specifically to the several figures of the said drawings. there is provided a tank. designated by the numeral 1, which tank is normallyfilled with water and has arranged upon the end portions thereof suitable bearings 2 and 3. Braces 4 are arranged at the corners of the tank construction, and obviously, serve to brace the end portions thereof in an efficient manner.

Within the tank 1, there is arranged a cylindrical drum 5, one extremity of which is reduced and provided with an inclined lip 6 while the remaining extremity is fully opened and has arranged adjacent thereto, a series of circularly disposed pockets 7 and 8. the pockets 7 serving as means for receiv:

.ing the gravel from the separated matter and the pockets 8 serving as means for receiving the sand from the separated matter. A shaft 9 is extended longitudinally through the drum 5 and has its extremities journaled in the bearing 3 While upon the same at suitable points. spiders 10 are mounted and have their spoke portions engaged with the drum 5 to properly mount the same upon the shaft 9 to cause rotation thereof with the said shaft. A cylindrical screen 11 is arranged within the drum 5 in spaced relation therefrom and has its opposite ends secured to certain of the pockets 7 and to the reduced extremities of the cylinder. If desired, supporting blocks may be arranged at intervals beneath the screen, to prevent sagging of the same when subjected to the weight of the matter to be separated by the machine. a

A hopper 12 is supported by brackets 13 mounted upon one end portion of the tank and extends into engagement with the reduced open end of the drum 5, whereby, the matter to be separated may be delivered dircctlv into the machine.

Discharge chutes or troughs, substantially U-shaped in cross sectionand designated by the numerals 14 and 15 are ar ranged adiacent the fully open extremity of the cylinder 5 and have the upper portions thereof offset as at 16. one of the offset por tions being arranged beneath the pockets 7 while the other is arranged beneath the pockets 8. Bracket arms 17 are secured to the adjacent end portion of the tank and obviously. rigidly supports the intermediate portions of the discharge chutes 14 and 15.

Awater supply pipe 18 is passed through th t end portion of the tank as adiacent the delivery end of the machine and extends into the cylinder 5 at a point above the same, while at the opposite end or intake portion of the machine a trough 19 is arranged, the same being supported upon suitable standards 20 and secured to the bottom of the tank 1h are A spiral gear 21 is mounted upon one extremity of the shaft 9 and is engaged by a similar gear 22 mounted on a transversely disposed shaft 23 journaled in bearings 24 upon the tank 1 and having a balance wheel 25 mounted on its free extremity. The

shaft 28 is extended into engagement with a suitable source of power whereby rotary motion will be imparted to the shaft 9 and as a consequence, to the rotatable cylindrical drum 5. V

In operation, sand and gravelare passed into the machine by way of the hoppers 12 and upon rotation of the same, will be agitated, the sand sifting through the screen onto the drum 5 and passing along the same into engagement with the pockets 8, due

' to the inclined positioning of the said drum.

The gravel, by reason of the mesh of the screen will be also moved along Within the machine into the pockets? and as will be understood, due to the rotation of the drum 5, will be carried to a position directly over the offset portions of the chutes 14 and 15 whereat it will be discharged thereinto and a the separate products then conveyed by way of the chute into suitable receir i11g receptacles or the like. Previous to the discharge of the sand and gravel from the machine,

the same is thoroughly washed by reason of a the inflow of'water from the water supply pipe 18 therethrough, the level of the water lying within the tank 1 until it overflows by Way of the trough 19 into adrain or sewage system, thus, the sand and gravel previous to its discharge, is thoroughly Washed and free from various impurities and other foreign matter.

I am aware that changes may be made in the various arrangements and combinatlons of parts as well as in the details of the construction of the same, without departing from the scope of my present invention, as

with the drum atone end, a plurality of circularly disposedseries of pockets car-' 'ried upon theopposite end of said drum,

certain of said pockets communicating with the drum,- certain others of said pockets communicating with the screen, and lndependent chutes projecting into the drum and arranged beneath the several series of pockets, 7 V a 2. In a separating machine, a rotatable drum, a cylindrical screen in said drum in spaced relation therefrom and having one end spaced from the adjacent end of the drum, a hopper engaged with the drum at the opposite end, a circularly disposed series of pockets carried upon the inner face of the first mentioned end ofthe drum, an ad ditional circularly disposed series of pockets carried upon the inner face of the end'of the drum adjacent said first mentioned pockets, the last mentioned series of pockets communicating with the screen, the first mentioned series of pockets communicatmg with the drum, and independent chutes projecting through said end of the vdrum and arranged beneath the different series of.

pockets. V a 7 In testimony whereof, I affix my signature hereto.

' FERDINAND KRENZER.

Copics'of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents,

Washington, D. 0. 

